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vt: redefine world of cursor macros

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The cursor code used to use magic constants, ANDs, ORs, and some macros.
Redefine all this to make some sense.

In particular:
* Drop CUR_DEFAULT, which is CUR_UNDERLINE. CUR_DEFAULT was used only
  for cur_default variable initialization, so use CUR_UNDERLINE there to
  make obvious what's the default.
* Drop CUR_HWMASK. Instead, define CUR_SIZE() which explains it more.
  And use it all over the places.
* Define few more masks and bits which will be used in next patches
  instead of magic constants.
* Define CUR_MAKE to build up cursor value.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-fbdev@vger.kernel.org
Link: https://lore.kernel.org/r/20200615074910.19267-25-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby
2020-06-15 09:48:57 +02:00
committed by Greg Kroah-Hartman
parent dc219db66a
commit 4dfa3c54f9
6 changed files with 22 additions and 16 deletions
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28
include/linux/console_struct.h
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@@ -173,17 +173,23 @@ struct vc {
extern struct vc vc_cons [MAX_NR_CONSOLES];
extern void vc_SAK(struct work_struct *work);
#define CUR_DEF 0
#define CUR_NONE 1
#define CUR_UNDERLINE 2
#define CUR_LOWER_THIRD 3
#define CUR_LOWER_HALF 4
#define CUR_TWO_THIRDS 5
#define CUR_BLOCK 6
#define CUR_HWMASK 0x0f
#define CUR_SWMASK 0xfff0
#define CUR_DEFAULT CUR_UNDERLINE
#define CUR_MAKE(size, change, set) ((size) | ((change) << 8) | \
((set) << 16))
#define CUR_SIZE(c) ((c) & 0x00000f)
# define CUR_DEF 0
# define CUR_NONE 1
# define CUR_UNDERLINE 2
# define CUR_LOWER_THIRD 3
# define CUR_LOWER_HALF 4
# define CUR_TWO_THIRDS 5
# define CUR_BLOCK 6
#define CUR_SW 0x000010
#define CUR_ALWAYS_BG 0x000020
#define CUR_INVERT_FG_BG 0x000040
#define CUR_FG 0x000700
#define CUR_BG 0x007000
#define CUR_CHANGE(c) ((c) & 0x00ff00)
#define CUR_SET(c) (((c) & 0xff0000) >> 8)
bool con_is_visible(const struct vc_data *vc);